A girl who came from the future, although that part’s a secret!

She suffers from an incurable illness and mixes in with Naoto’s group of friends to find out the cause. She is unapologetically blunt and tells it exactly how it is, which often leads to misunderstandings. Yuki may act like a ditz, but she’s anything but.

Mizuka’s younger sister.

She is levelheaded and fills the role of covering for Mizuka’s less-than-disciplined behavior, as well as acting as the comedic straight-man to the group. While sensible and composed, she panics when something unexpected happens. Although she is exceptionally athletic, she isn’t a part of any clubs.

Anzu’s older sister.

She is most comfortable when she, Anzu, and Naoto all get along.

Mizuka is a lazy and rather listless person, but is good-natured all the same. Her likes include Anzu’s boobs and cats.
She has an exceptional memory.